diff options
| author | Martin Kepplinger <martin.kepplinger@puri.sm> | 2020-01-29 14:02:59 +0100 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2020-02-12 18:19:14 +0200 |
| commit | 16bbc3eb83728c03138191a5d23d84d38175fa26 (patch) | |
| tree | 5ad883d650ff4d31b6bf5051e2165c9dcc2af149 /drivers/net/wireless/rsi | |
| parent | 8299adec99b29f341f0ee4269f1ce70ca8508e78 (diff) | |
| download | linux-16bbc3eb83728c03138191a5d23d84d38175fa26.tar.bz2 | |
rsi: fix null pointer dereference during rsi_shutdown()
Appearently the hw pointer can be NULL while the module is loaded and
in that case rsi_shutdown() crashes due to the unconditional dereference.
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/rsi')
| -rw-r--r-- | drivers/net/wireless/rsi/rsi_91x_sdio.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/wireless/rsi/rsi_91x_sdio.c b/drivers/net/wireless/rsi/rsi_91x_sdio.c index 1bebba4e8527..5d6143a55187 100644 --- a/drivers/net/wireless/rsi/rsi_91x_sdio.c +++ b/drivers/net/wireless/rsi/rsi_91x_sdio.c @@ -1468,12 +1468,15 @@ static void rsi_shutdown(struct device *dev) struct rsi_91x_sdiodev *sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev; struct ieee80211_hw *hw = adapter->hw; - struct cfg80211_wowlan *wowlan = hw->wiphy->wowlan_config; rsi_dbg(ERR_ZONE, "SDIO Bus shutdown =====>\n"); - if (rsi_config_wowlan(adapter, wowlan)) - rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n"); + if (hw) { + struct cfg80211_wowlan *wowlan = hw->wiphy->wowlan_config; + + if (rsi_config_wowlan(adapter, wowlan)) + rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n"); + } if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 && adapter->priv->bt_adapter) { |